Class: BrewDG::Graph

Inherits:
Plexus::Digraph
  • Object
show all
Defined in:
lib/brew_dg/graph.rb

Instance Method Summary collapse

Instance Method Details

#isolated_vertices ⇒ Object 



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# File 'lib/brew_dg/graph.rb', line 27

def isolated_vertices
  vertices.select do |vertex|
    in_degree(vertex).zero? && out_degree(vertex).zero?
  end
end

#visualization ⇒ Object 



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# File 'lib/brew_dg/graph.rb', line 8

def visualization
  visualization = GraphViz.new(:G)

  isolated_vertices.each do |vertex|
    visualization.add_nodes(vertex.to_s)
  end

  edges.reduce(visualization) do |visualization, edge|
    manifest = edge.to_a.last

    left, right = edge.to_a.first(2).map do |package|
      visualization.add_nodes(package.to_s)
    end

    visualization.add_edges(left, right, edge_options(manifest))
    visualization
  end
end